My only suggestions would be to create "Series" if you will and to add text/slides to reinforce your key points (keep listeners from needed to take notes).

By series, I mean, a start to finish, 10- part guide for a beginner/hardgainer that takes him/her from figuring out what to eat, to bulking, to their first beginner's routine to becoming an intermediate, including how long that's going to take.

A 10-part series may be tricky because I think some of the questions are on the fly, from people, as opposed to a part of a planned topics style set-up.